snowy environment like this?

Is it possible to achieve exact thing (in the link below) with unity, any tutorial or something?

While it may not be 100% exact, I’m fairly certain that can pretty much be done in Unity if you know your way around shaders. If you do, you could even try to follow your Unreal tutorial there, but write the code in Unity instead. Personally, I don’t know shaders well at all hah. I did a bit of research into similar things in the past. Maybe these can point you in the right direction?

Rise Of the Tomb Raider Snow Shader Workflow

Other Snow Shader Tutorials

Snow Effect

Snowtracks Shader